https://m.youtube.com/watch?v=Gxm_qpKh7Jw (vid is demonstration of destructive power of C4)

Possible high yield explosives detonated near incendiaries?

Just woke up. Talked to my dad about the blast.

He used to work in intelligence (submarine, over 30 years ago). He thinks the blast may have been caused by C4 or RDX plus incendiary. Possibly a lot of it???? That shit is known for producing some pretty powerful blasts.

Keep in mind this is his best guess